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发明名称
Schreitender hydraulischer Ausbau fuer untertaegige Gewinnungsbetriebe
摘要
申请公布号
DE1162793(B)
申请公布日期
1964.02.13
申请号
DE1961G032945
申请日期
1961.08.16
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
DOMMANN DR.-ING. GUENTHER
分类号
E21D23/00;E21D23/06
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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